Lack of Fusion Wagon Tracks

A couple of ¨parallel¨ indications lines bounding  the root bead, are classically called ¨wagon tracks¨ by skilled radiographers.This indication is explained by RT personnel as a couple of almost parallel slag inclusion lines after the root pass has been completed. Sometimes this phenomenon involves a couple of lack of fusion lines side by side as can be seen in the image below:

From one side, the UTPA indication is shown below: